Shuttle for enabling all looms to be worked as looms having a continuous weft feed



Feb. 24, 1925. 1,527,779

A. BOITEL SHUTTLE FOR ENABLING ALL LOOMS TO- BE WORKED AS LOOMS HAVING ACONTINUOUS WEF'I' FEED Filed Jan. -19, 1925 5 Sheets-Sheet 1 y I J' ilFeb..24, 1925. l 1,527,779

ENABLING ALL LOOMS TO BE WORKED A. BO'ITEL SHUTTLE FOR 'AS LOOKS HAVINGA CONTINUOUS WEFT FEED` 5 Sheets-Sheet 2 Filed Jan.- 19, 1923 Feb.24,1925. '1,5253179 A. BOITEL SHUTTLE FOR ENABLING ALL LOOMS 'IO BEWORKED AS LOOMS HAVING A CONTINUOUS WEFT FEED Filed Jan. 19, 1923 3Sheets-Sheet 3 y wmf/:firs

Patented Feb. 24, 1925.

UNITED STATES ALEXANDRE BOITEL, OF PUTEAUX, FRANCE, ASSIGNOR TO GEORGESPARIS, FRANCE.

PATENT OFFICE.

DELMOUSEE, OF-

SHUTTLE FOR ENABLING ALL LOOMS T0 BE WORKED AS LGMS HAVING A CON-TINUOUS WEET FEED.

Application filed January 19, 1923. Serial No. 613,593.

To all whom t may concern.

Be it known that I, ALEXANDRE BoirsL, a citizen of the French Republic,residing at Puteaux, in the Department of the Seine, France, haveinvented new and useful Improvements in Shuttles for Enabling All Loomsto be `Worked as Looms Having a Continuous W'eft Feed, of which thefollowing is a specification. V

This invention has for its object to enable all looms to be worked aslooms having a continuous weft feed, by means of weft bobbins or copsarranged at each side of the loom, the weft being inserted alternatelyinto the warp shed by means of a shuttle or other moving devicefurnished with tongs or other means of grasping the weft.

The invention therefore consists in imf provements in the shuttle whichis designed to engage alternately at each side of the loom the weftrequired for the pick, and to carry said weft through the shed. Theinvention consists in such a manner of operating this shuttle as willassure a reliable working of the loom, without breakage of warp threads,and so as to produce a perfectly even selvedge. l

The improved shuttle has externally the shape of the ordinary shuttleand may be solid or hollow; at or near each of its tips, in a directionparallel to the axis passing through the tips of the shuttle, itcomprises a fixed hook designed to engage the weft thread and carry itthrough the shed. This shuttle comprises further improvements whereby,for instance, the fixed hooks shall not hinder the complete travel ofthe shuttle through the shed, when picked by -a picker of a mechanicalpicking mechanism, or other picking mechanism of pneumatic, electric,elastic, or `other type; and the said fixed hooks shall not catch, andconsequently cut any warp threads that are not sufficiently taut, orwhen the opening of the shed is not large.

The improved operation of the improved shuttle ischaracterized by thefeature that on the exit of the shuttle from the shed, Athat is to say,on its arrival in the shuttle boxes, the position of the shuttle will besuch that the weft which is doubled shall not project beyond theselvedge of the cloth, and that after the hooks have become disen` gagedfrom the weft shoot just picked, the said hooks shall not be liable tocatch the last threads of the warp near the selvedge and thus breakthem, when the slay begins its back stroke.

In order to enable this invention to be more fully understood, severalconstructional forms of the improvements constituting the invention arehereinafter described and illustrated diagrammatically in theaccompanying drawings, in which 4 Figure l is a shuttle.

Figure 2 is a side elevation of the same, viewed from the hooked sidefacing the reed, and

Figure 3, is a side elevation, viewed from the opposite side, facing thecloth.

Figure i is a view showing the shuttle gearing its entry into theleft-hand shuttle Figure 5 is a similar view showing the shuttle at themoment when the rear hook has released the loop of the weft at thelefthand selvedge of the cloth, and

Figure 6 is a similar View showing the shuttle at the moment when theslay, after reaching the fell of the cloth, is about to begin its backstroke. v

Figure 7 is a view lof the left-hand end of the slay, showing thelocation of the mechanism for positioning the shuttle.

Figure 8 `is a view showing the mechanism at rest, which is designed tobring the weft within the range of the hook of the shuttle when thelatter is about to be picked through the shed, andY Figure 9 is asimilar' view showing the weft engaged by the hook at the remote end ofthe shuttle.

As shown in Figures l, 2 and 3, the improved shuttle l is characterizedby the feature that its side 2 which comes in contact with the reed, isshifted out from the axis passing through the tips or points of thetapered ends of the shuttle relatively to the opposite side 3, so thatthis side 2 has a non-symmetrical hump, which in proportion to thedegree of hump, increases the distance between the reed against whichthe shuttle slides and the said shuttle axis the latter being shown bythe broken line in Fig. l.

Owing to this non-symmetrical hump 2 plan of the improved hooked A whichincreases this distance between the reed` and `the shuttle axis, thefixed hooks, having shanks 4 whose points or turned-over hook-formingends 5A are varranged horizontally and bent towards the reed, may bearranged with the hook shanks or rods 4 parallel to the shuttle axiswithout risk of the hook ends 5 coming into contact with the pins of theslay reed, and without risk of catching in the threads of the warp shed,while at the same time being suficiently distant from the shuttle axis,to allow of the shuttle being picked by any kind of picking mechanismwhatever, such as for instance, the picker 6, without any modificationwhatever of the picking devices which are thus prevented from cominginto contact with the hooks 4 and damaging these vby the picking blow,which would `occur if the hooks 4 were mounted simply on the usual formsof shuttles. y I

Further, for the purposes of operation of this shuttle, the latter onits side B facing the fell of the cloth is provided with t-worecesses ormortices 7, according as the shuttle 1 is solid or hollow, for alpurposel hereinafter set forth. I y

The operation of the improvedshuttle as hereinafterdescribed for thepurpose of enabling all looms tobe worked as looms having a continuousweft feed, must, beyond theY operation common to all shuttles,essentially comprise at eacharrival of the Vshuttle lat the right handand left hand sides of the slay, absolutely determined movementsdesigned to position the shuttle 'successively at determined pointsintended to effect, first the oertain release of the tips 5 of the hooks4 from the loop of double weft which has just .been passed, withouthowever allowing the loop constituted by this doubled weft, topii'oliectbeyond the last threads oi' the warp, yso as yto ensure a perfectly even'selvedge-, and lhen to assure the b ackstroke of the shty, without thehooks ofv the shuttle during this back stroke catching thel end threads,of the warp, whereby such threads would becon'ie daniaged withconsequent waste ofl the threads and .a great loss of time consumed inrepairing them. 4 y A `lilith this object, the arrivalof the shuttle ateither of the two selvedges is soregulated and positioned that, incombination 'with the advance of the slay towards the fell of the cloth,the shuttle will occupy al position which is absolute-ly determinedforassiiring the disengagement of Vthe point of the hook from the loopof doubled weft without said loop projecting beyond the selvedge. y Thenat the moment when the slay reaches there-ll of the cloth, and after ithas beaten up lthe shoot of wett, the position of the shuttle ywill beso regulated that the distance otitis hooks from the selvedge ofthe warpshall be'sufficiently great to prevent, during the/back stroke of theslay, the hooks from catching the lastl threads of the s'elvedge on'each side of the warp sheds.

This determined operation of the shuttle may be produced by variousmeans and among others, by a pusher mechanism `of the kind hereinafterdescribed, mounted on eac-h side of the slay, and constituted by a plate8 Xedto the slay, comprising two bosses 9 through which can passvertically a spindle 10 on the upper end of which there is lined ahorizontal linger or pusher 11 designed to enter the mortices 7 of theshuttle so as to assure the absolutely necessary positions of the latteraccording to? the rocking motion imparted tothe pusher 11'A during andby the advance o the slay, by 'means of the regulatedrotationalinotionof the spindle 10, due to a kind of horizontal project-ion 12which is fixe-d on the lower end of the said spindle, and comprises ananti-friction roller 13A for reducing the friction along a. fixed rampor stationary cam 14 mounted under the slay and fastened to the loomframing. y This iiXned ramp comprises two cam projections 15 and 16designed tov impart', according tothe advance oft-he slay to the fell ofthe cloth, two determined 'positions to the pusher 11, which assures thenecessary positions of the shuttle. rThe return of th'e pusher 11 intoits normal position is assured by a spiral spring 17, whose ends arefixed respectively to the plate 8 and pusher 11. vOn each yside of theslay, the side plates 18 of the shuttle-'guides are notched at 19 inlsuch a manner as to allow of horizontal oscillation of the pusher 11land its 'entry 'into the -mortices 7 of the shuttle 1.

This very simple mechanismy 'having been arranged and mount-ed as abovedescribed, will now operate as follows: l K As shown 'in Figurel 4, theIshuttle 1 vis shown 4as arriving Aat the left hand selvedge beforecoming into Contact with the pusher v1 1 which is at rest, the roller 13not having yet come into contact with the ramp '14.

As 'the slay 'continues to advance, the roller 13 will come into contactwith the first projectionl of lthe ramp 14, thus y'producing alpartialrotation of the spindle 10 and an oscillatory finotion ofthe ypusher1'1, which passing throuoh the notch l19 of the vleft hand shuttle-guide18, ywill enter the 'lefthand niortice 7 in the side 3 of the shuttle 1,pushing the latter so as to bring iit into the position of leftwardtravel K4shown in Figure 5, and by reason of the continued 4forwardmovement of the slay 'the hook 5 of the rod'4 is disengaged from theloop'QO 'constituted by the doubled weft 21 'as also "shown in Fig. 5,without this 4loop projecting beyond the vlast lthread "22 "of lthe warpshed. i

VJ ust "before theslay arrives atthefell of the cloth, the roller "13coming on tothe projection 16 of the ramp 14, will cause the pusher 11to rock forwards a little more, as shown in Figure 6. This movement willbring the shuttle to the end of its travel in an absolutely exactmanner, thus keeping with certainty a distance between the hook 5 andthe last threads of the selvedge of the cloth, with the` result thatwhen the slay moves back, the said threads will not be liable to becaught by the point 5 of the hook 4 and so be broken.

In order to assure the engagement, by the shuttle of the weft thread tobe inserted into the shed, a mechanism may be provided for raising theweft thread coming from the cop or bobbin, to the level of the hook 5 ofthe shuttle at the moment of picking. A. mechanism of this kind will ofcourse be provided on each side of the loom, and may be constituted forinstance, by a verticalbar 23 carried by the slay and capable of slidingvertically in relation to the latter. This bar 23 receives the weftthread 24 from the bobbin mounted at the side of the loom, and, passingto the selvedge of the cloth, this thread lies flat on the bottom of anotch 25 formed in the slay sole, in such a manner as to allow theshuttle 1.to pass when Vthe bar 23 is at rest in its lower position, asshown in Figures 7 and 8, the shoot at this moment being supplied by thebobbin situated on the opposite or right hand side of the loom Whentheshuttle is to be picked from the left hand side to theright handside, for example at the moment when the shuttle in the initial part ofits picking movement, has moved beyond the notch 25, the bar 23 israised (as shown in Figure 9) so as to bring the thread underneath theshuttle 1 and curving it in such a manner that the thread 24, when taut,shall be situated in the path of the point 5 of the hook 4, at the rearor left hand end of the shuttle, and shall there- Yfore be carried alongby the shuttle so as to constitute the double shoot 21. The thread isdrawn from the bobbin without friction or braking, by leading the threadthrough guides or conduits 26 of porcelain or other material.

The raising of the bar 23 on each side of the loom at the moment ofdeparture of the shuttle 1 is produced for` instance by means of a lever27 bearing against a stud 28 of the bar 23, this lever 27 being raisedby a cam 29 fixed on the eccentric shaft of the weft stop-motion forexample.

The vertical bar 23 is mounted on the slay to move therewith, and alsofor up and down sliding movement thereon, and may extend from the lowerportion of the slay to the top thereof. The lever 27, which raises thebar 23 by means of the stud 28, is also mounted on the slay to movetherewith, and at its right hand end is pivoted on a supporting block 30iixed upon the slay, as shown in Figure 7. not mounted on the slay maybe fixed on any suitable shaft on the loom and is shown in Figs. 7, 8and 9, as carried by a shaft 31, which, as above noted, may be theeccentric shaft of the weft stop-motion. Just at the time when theslidingthread-controlling bar 23 is to be raised, the slay occupies aposition in which the lever 27 is located just above and in the path ofthe cam 29. This cam 29 is so positioned upon its operating shaft 31 asto operate to raise the lever 27 just at the time when the lever 27 isbrought by the moving slay into alignment with the cam. The raising ofthe lever 27 raises the bar 23 and lifts the weft thread 24 intoposition to be engaged by the rear shuttle hook 5, as shown in Figure 9.

The operation of the thread-lifting bar 28, as above described, is sotimed that lthe thread 24 is lifted from the notch 25 at a time when theshuttle 1 is in the initial part of its course in its picking movementand at a time when the forward point of the shuttle, with respect to itsdirection of movement, has passed a vertical plane passing through thethread 24. In view of the fact that the shuttle at this time will beabove the thread 24, which passes through the notch 25, it will beunderstood that the thread as it is drawn upwardly by the bar `23 willpass around beneath and up at the rear of the shuttle, and as soon asthe body of the shuttle has passed at its rear end beyond the notch 25,the thread 24 will be brought into position to be engaged by the shuttlehook 5 at the rear end of the shuttle, as shown in Fig. 9, in which thethread 24 is shown in dotted lines at the remote or rear end of theshuttle 1, so that as the shuttle continues its picking movement, this"rear hook, which is at the left hand end of the shuttle, as viewed inFigs. 1 to 6 inclusive, will catch the weft thread 24 and carry itdoubled through the shed.

It is to be understood that modifications may be made in carrying thepresent improvements into effect without thereby departing from thenature of the invention.

What I claim is:

l. In a loom shuttle comprising a body having tips to be engaged by thepicker, the combination of weft-engaging hooks fixed on the shuttle,o-ne at each end of the shuttle, said hooks being located out of linewith the shuttle axis passing through said tips so as to provideclearance for picking on the tips, and said hooks being located betweensaid axis and the side surface of the shuttle which comes next to theloom reed and being turned toward the latter and being locatedsufficiently inward from said side surface of the shuttle to clear thereed.

2. In the loom shuttle claimed in claim 1,

The cam 29 which isl the locating` of said shuttle axis farther from thereed side than from the fell side of the shuttle, thereby to provideample clearance of said hooks for picking the shuttle on its tips andalso between said hooks and the reed so that the hooks will clear thelatter.

3. The loom shuttle claimed in claim l in which each of said hookscomprises a hook shank parallel to the shuttle'axis and ter1ninating ina hook-forming endidirected towards the reed side of the Shuttle.

4L. The loom shuttle claimed in claim l in which each ofl said hookscomprises a hook shank parallel to the shuttle axis and projectingbeyond the adjacent shuttle tip and terminating in a. hook-forming enddirected towards the reed side of the shuttle.

5. A loom shuttle comprising a shuttle body having tapered ends formingtips to he engaged by the picker, the axis of the shuttle passingthrough said tips being farther from the lreed side of the shuttle thanfrom the fell side thereof, to provide space for weft-engaging hooksbetween the shuttlc tips and the outer surface of the reed side of theshuttle, and at each end of the shuttle a weft-engaging hook comprisinga hook shank parallel to the shuttle axis hetween the latter and theouter surface of the reed side of the shuttle and fixed on the shuttle,and terminating outwardly beyond the shuttle tip in a liool for1ning enddirected towards the reed side of the shuttle but terminating on a lineinward from the outer surface of the reed side of the` shuttle so as toclear the reed, and said hooks be ing suiiiciently spaced from theshuttle axis to enable the shuttle to be picked on its tips.

6. The loom shuttle claimed in claim '5 in which shuttle positioningrecesses are provided in the fell side of the shuttle.

7. In a loom, in combination with the shuttle thereof claimed in claiml, and in which said shuttle hooks project longitudinally of the shuttlebeyond the shuttle tips, automatically operated means adapted to movethe shuttle positively at the end of its throw to a position in whichthe weft-carrying hook just clears the selvedge, so that the forwardmovement of the reed-carrying Slay will disengage the hook from the loopof the weft without carrying the latter beyond the warp threads at theselvedge, said means being adapted then to impart further posi- Leannetive movement to the shuttle so that as the slay moves backward the hookwill clear the selvedge and the warp threads.

8.l .In ay loom, in combination with the shuttle claimed in claim 5 toform a part thereof, and said shuttle being provided withshuttle-positioning recessesfinn the fell side thereof, at each end ofthe slay a shuttle-positioning device operated by the slay in its.forward movement, said device comprising a finger pivoted on the slayand engaged in one of said recesses in the shuttle, an operating' memberconnected to said finger, and a stationary .cam having two successivelyacting fingerfopcratingcam projections, the first cam projectionengaging said member to move the shuttle only sutiiciently to clear theshuttle hook from the warp threads at the selvedge, so that the furtherforward movement of the slay will disengage the hook from the loop ofthe ,weft thread without the latter being carried to the selvedge, andthe second cam projection then engaging said member to impart furthertraveling movement to the shuttle i,

so the disengaged shuttle hook will clear the selvedge and warp threadsas the slay moves backward.

9. In a loom, in combination with the shuttle claimed in claim vl toform a part of the loom, an automatically operated device at each end ofthe slay for moving the weft thread into a position to be engaged by ashuttle hook. Y

l0. In a loom, in combination with the shuttle claimed in claim 5 toform a part of the loom, means at each end of the slay to guide thecorresponding weft thread beneath the shuttle race as this thread passesforward to the fell of the web, a lifter on the slay back of the shuttlerace to raisethe weft thread around the shuttle and into engagement withthe shuttle hook at the picking end of the shuttle, and means forautomatically operating said lifter including a cam operated by asuitably moving part of the loom.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses. i

ALEXANDRE BOITEL, Witnesses Gains DANZnR, Liicinn Crespin;

